c5a.4xlargevsr5a.4xlarge
c5a.4xlarge is 32% cheaper than r5a.4xlarge on demand in US East (N. Virginia), saving $210.24 a month.
| At a glance | c5a.4xlarge | r5a.4xlarge |
|---|---|---|
| On-demand | $0.616/hr32% less | $0.904/hr |
| Lowest rate | $0.2238/hr31% lessSpot, can be interrupted | $0.3225/hrSpot, can be interrupted |
| Size | 16 vCPUs, 32 GiB | 16 vCPUs, 128 GiB |
| Processor | AMD EPYC 7R32 | AMD EPYC 7571 |
| Architecture | x86_64 | x86_64 |
Prices in US East (N. Virginia)
“Off” is the discount against each type’s own on-demand price. Linux, USD per hour.
| Option | c5a.4xlarge | r5a.4xlarge | r5a.4xlarge vs c5a.4xlarge |
|---|---|---|---|
| On-demandPay by the hour | $0.616 | $0.904 | ▲ 47% |
| SpotCan be interrupted | 64% off$0.2238 | 64% off$0.3225 | ▲ 44% |
| 1-yr reservedNo upfront | 37% off$0.388 | 37% off$0.57 | ▲ 47% |
| 3-yr reservedNo upfront | 57% off$0.266 | 57% off$0.391 | ▲ 47% |
| 1-yr savings planHourly commitment | 27% off$0.448 | 27% off$0.657 | ▲ 47% |
| 3-yr savings planHourly commitment | 52% off$0.297 | 48% off$0.472 | ▲ 59% |
Key differences
The biggest lead each one has.
Where c5a.4xlarge leads
On-demand price$0.616 vs $0.904 per hour
32% cheaperClock speed3.3 GHz vs 2.5 GHz
32% higherEBS max bandwidth3,170 Mbps vs 2,880 Mbps
10% higherWhere r5a.4xlarge leads
Memory (GiB)128 vs 32
4× higherEBS baseline IOPS16,000 vs 6,600
2.4× higherSpecs
15 of 40 specs differ. Those are in bold.
| Compute4 of 10 differ | c5a.4xlarge | r5a.4xlarge |
|---|---|---|
| vCPUs | 16 | 16 |
| Physical cores | 8 | 8 |
| Threads per core | 2 | 2 |
| Architecture | x86_64 | x86_64 |
| Processor | AMD EPYC 7R32 | AMD EPYC 7571 |
| CPU maker | AMD | AMD |
| Clock speed | 3.3 GHz | 2.5 GHz |
| Sustained clock | 3.3 GHz | 2.5 GHz |
| Processor features | AMD Turbo; AVX; AVX2 | AVX; AVX2; AMD Turbo |
| Burstable | No | No |
| Memory1 of 1 differ | c5a.4xlarge | r5a.4xlarge |
|---|---|---|
| Memory (GiB) | 32 | 128 |
| NetworkingAll 8 match | c5a.4xlarge | r5a.4xlarge |
|---|---|---|
| Network | Up to 10 Gigabit | Up to 10 Gigabit |
| Network baseline | 5 Gbps | 5 Gbps |
| Network peak | 10 Gbps | 10 Gbps |
| Enhanced networking | Yes (ENA) | Yes (ENA) |
| EFA | No | No |
| IPv6 | Yes | Yes |
| Max network interfaces | 8 | 8 |
| IPv4 addresses per interface | 30 | 30 |
| Storage7 of 11 differ | c5a.4xlarge | r5a.4xlarge |
|---|---|---|
| Storage | EBS only | EBS only |
| EBS optimized | Yes | Yes |
| EBS over NVMe | Required | Required |
| EBS throughput | Up to 3170 Mbps | Up to 2120 Mbps |
| EBS baseline bandwidth | 1,580 Mbps | 2,880 Mbps |
| EBS max bandwidth | 3,170 Mbps | 2,880 Mbps |
| EBS baseline throughput | 197.5 MB/s | 360 MB/s |
| EBS max throughput | 396.25 MB/s | 360 MB/s |
| EBS baseline IOPS | 6,600 | 16,000 |
| EBS max IOPS | 13,300 | 16,000 |
| Max EBS volumes | 27 | 27 |
| Instance details3 of 10 differ | c5a.4xlarge | r5a.4xlarge |
|---|---|---|
| Family | c5a | r5a |
| Category | Compute optimized | Memory optimized |
| Current generation | Yes | Yes |
| Normalization factor | 32 | 32 |
| Bare metal | No | No |
| Hypervisor | Nitro | Nitro |
| Placement groups | Cluster, Partition, Spread | Cluster, Partition, Spread |
| Hibernation | No | Yes |
| Nitro Enclaves | Yes | Yes |
| Boot modes | Legacy BIOS, UEFI | Legacy BIOS, UEFI |
On-demand prices by region
Cheapest for c5a.4xlarge first. Linux, USD per hour.
| Region | c5a.4xlarge | r5a.4xlarge | Difference |
|---|---|---|---|
| Asia Pacific (Mumbai)ap-south-1 | $0.376 | $0.572 | ▲ 52% |
| US East (N. Virginia)Used in summaryus-east-1 | $0.616 | $0.904 | ▲ 47% |
| US East (Ohio)us-east-2 | $0.616 | $0.904 | ▲ 47% |
| US West (Oregon)us-west-2 | $0.616 | $0.904 | ▲ 47% |
| Canada (Central)ca-central-1 | $0.672 | $0.992 | ▲ 48% |
| Asia Pacific (Seoul)ap-northeast-2 | $0.688 | $1.088 | ▲ 58% |
| EU (Ireland)eu-west-1 | $0.688 | $1.016 | ▲ 48% |
| EU (Frankfurt)eu-central-1 | $0.696 | $1.096 | ▲ 57% |
| Asia Pacific (Singapore)ap-southeast-1 | $0.704 | $1.088 | ▲ 55% |
| EU (London)eu-west-2 | $0.728 | $1.064 | ▲ 46% |
| EU (Milan)eu-south-1 | $0.728 | $1.064 | ▲ 46% |
| EU (Paris)eu-west-3 | $0.728 | $1.064 | ▲ 46% |
| AWS GovCloud (US-East)us-gov-east-1 | $0.736 | $1.088 | ▲ 48% |
| AWS GovCloud (US-West)us-gov-west-1 | $0.736 | $1.088 | ▲ 48% |
| US West (N. California)us-west-1 | $0.76 | $1.008 | ▲ 33% |
| Asia Pacific (Tokyo)ap-northeast-1 | $0.768 | $1.096 | ▲ 43% |
| Asia Pacific (Sydney)ap-southeast-2 | $0.8 | $1.088 | ▲ 36% |
| South America (Sao Paulo)sa-east-1 | $0.944 | $1.448 | ▲ 53% |
Keep exploring
Each type’s own page, and how it compares with others.
AWS EC2 Linux prices in USD. Monthly figures use 730 hours. Prices last updated 12 Nov 2026.